Update CONTRIBUTING.md

Update discussions

Author: dsp-ant

CONTRIBUTING.md

@@ -88,12 +88,12 @@ Documentation improvements are always welcome:
 
 ## Community
 
-- Participate in [GitHub Discussions](https://github.com/modelcontextprotocol/servers/discussions)
+- Participate in [GitHub Discussions](https://github.com/orgs/modelcontextprotocol/discussions)
 - Follow the [Code of Conduct](CODE_OF_CONDUCT.md)
 
 ## Questions?
 
 - Check the [documentation](https://modelcontextprotocol.io)
 - Ask in GitHub Discussions
 
-Thank you for contributing to MCP Servers!
+Thank you for contributing to MCP Servers!